Work output and efficiency at maximum power of linear irreversible heat engines operating with a finite-sized heat source.

Abstract

We formulate the work output and efficiency for linear irreversible heat engines working between a finite-sized hot heat source and an infinite-sized cold heat reservoir until the total system reaches the final thermal equilibrium state with a uniform temperature. We prove that when the heat engines operate at the maximum power under the tight-coupling condition without heat leakage the work output is just half of the exergy, which is known as the maximum available work extracted from a heat source. As a consequence, the corresponding efficiency is also half of its quasistatic counterpart.

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Cite this paper

@article{Izumida2014WorkOA, title={Work output and efficiency at maximum power of linear irreversible heat engines operating with a finite-sized heat source.}, author={Yuki Izumida and Koji Okuda}, journal={Physical review letters}, year={2014}, volume={112 18}, pages={180603} }